<template>
  <div>
    <!--  面包屑导航区  -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item><span>商品列表</span></el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card>
      <el-row :gutter="20">
        <el-col :span="7">
          <!--搜索与添加区域-->
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
            <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <!--   添加商品区   -->
          <el-button type="primary" @click="goAddPage">添加商品</el-button>
        </el-col>
      </el-row>
      <!-- table表格区 -->
      <el-table :data="goodsList" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name"></el-table-column>
        <el-table-column label="商品价格" width="100px" prop="goods_price"></el-table-column>
        <el-table-column label="商品数量" width="100px" prop="goods_number"></el-table-column>
        <el-table-column label="商品重量" width="100px" prop="goods_weight"></el-table-column>
        <el-table-column label="创建时间" width="170px" prop="add_time">
          <template slot-scope="scope">
            {{scope.row.add_time | dateFormat}}
          </template>
        </el-table-column>

        <el-table-column label="操作" width="130px">
          <template slot-scope="scope">
            <el-button type="primary" size="mini" icon="el-icon-edit"></el-button>
            <el-button type="danger" size="mini" icon="el-icon-delete" @click="removeGoodsById(scope.row.goods_id)"></el-button>
          </template>

       </el-table-column>

      </el-table>

      <!-- 分页区 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 10, 15, 20]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total" background>
      </el-pagination>

    </el-card>

  </div>
</template>

<script>
import axios from 'axios';

export default {
  data () {
    return {
      addGoodsDialogVisible: false,
      // 查询参数对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 20
      },
      // 商品列表
      goodsList: [],
      // 商品列表总数
      total: '',
      // 展示添加商品对话框
      showAddDialog: false
    };
  },

  created () {
    this.getGoodsList();
  },
  methods: {
    // 根据分页获取对应得商品列表
    async getGoodsList () {
      const { data: res } = await axios.get(
        'goods',
        { params: this.queryInfo });
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品列表失败!');
      }
      this.$message.success('获取商品列表成功!');
      console.log(res);
      this.goodsList = res.data.goods;
      this.total = res.data.total;
    },
    // 每页显示多少条数据得改变
    handleSizeChange (newSize) {
      this.queryInfo.pagesize = newSize;
      this.getGoodsList();
    },
    // 页码值得改变
    handleCurrentChange (newPage) {
      this.queryInfo.pagenum = newPage;
      this.getGoodsList();
    },
    // 根据商品id删除商品
    async removeGoodsById (id) {
      const confirmResult = await
      this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
        cancelButtonText: '取消',
        confirmButtonText: '确定',
        type: 'error'
      }).catch(err => err);
      if (confirmResult !== 'confirm') {
        return this.$message.info('取消了删除');
      }
      const { data: res } = await axios.delete('goods/' + id);
      if (res.meta.status !== 200) {
        return this.$message.error('删除商品失败!');
      }
      console.log(res);
      this.$message.success('删除商品成功!');
      this.getGoodsList();
    },
    // 跳转到添加商品界面
    goAddPage () {
      this.$router.push('/goods/add');
    }
  }
};

</script>
<style lang="less" scoped>
span{
  font-weight: bold;
  color: #409eff;
}
</style>
